Upper housing of a 24-hour flashing beacon



FIG. 1 is a front elevational view of the upper housing of a 24-hour flashing beacon;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is an isometric view thereof.

The broken lines in the drawings represent unclaimed subject matter. 

The ornamental design for an upper housing of a 24-hour flashing beacon, as shown and described. 